664372273466 has 24 divisors (see below), whose sum is σ = 1099129301172. Its totient is φ = 300956691200.

The previous prime is 664372273463. The next prime is 664372273469.

664372273466 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (664372273463) and next prime (664372273469).

It can be written as a sum of positive squares in 2 ways, for example, as 445661721241 + 218710552225 = 667579^2 + 467665^2 .

It is not an unprimeable number, because it can be changed into a prime (664372273463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4613975 + ... + 4755786.

Almost surely, 2^664372273466 is an apocalyptic number.

664372273466 is a deficient number, since it is larger than the sum of its proper divisors (434757027706).

664372273466 is a wasteful number, since it uses less digits than its factorization.

664372273466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370078 (or 9370067 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 56.

The spelling of 664372273466 in words is "six hundred sixty-four billion, three hundred seventy-two million, two hundred seventy-three thousand, four hundred sixty-six".